Supported OpenFlight Beads

OpenFlight Beads	Maya equivalent/comment
Control Records
Instance Definition	Instanced geometry
Instance Reference	Instance group node
POP	Changes move up to the previous parent in the DAG
PUSH	Creates a child under the current parent
Unsupported Control Records
Extension
POP Subface	See PUSH Subface
PUSH Subface	Maya cannot support hierarchy on co-planer surfaces. Instead the next face to be created is offset by 1 mm in the direction of the normal.
Pop Attribute	Reserved for MultiGen
Push Attribute	Reserved for MultiGen
Primary Records
Degree-of-Freedom Record	Maya transforms are used to represent DOF’s. See Workflow Considerations for more information.
EXTERNAL REFERENCE	File reference to another OpenFlight database.
FACE	Shape node for a face. Faces are part of a polymesh within Maya.
GROUP	Group transform node.
HEADER	Header record for an OpenFlight file. Sets orientation, field of view, etc. Sets the appropriate orientation and UI units.
Level-of-Detail	Level of detail group node.
Light Source	A Light.
Light Point	A special node type associated with the OpenFlight translator. See When using Light Points” for more details.
OBJECT	Transform node.
SWITCH	A special node type associated with the OpenFlight translator. See “Switch Nodes” under “Work Flow Considerations” for more details.
Unsupported Primary Records
Binary Separating Plane	Allows for the modeling of databases without Z information
Curve	B-spline, Cardinal, also known as Catmull-Rom, and Bezier.
CAT	Continuously Adaptive Terrain Skin. A triangle mesh for high fidelity, real-time viewing.
Clip Region
Extension Node	User defined node information.
MESH	Poly mesh. (This is not widely supported and may not be available in the first release)
Morph Vertex List	Works in conjunction with LOD node to morph geometry depending on the distance from the camera.
Road Segment
Road Construction
Road Path
Sound	Sound emitter position
Text
Ancillary Records
Continuation	Not a node but simply a continuation of a vertex list. Records are limited to 64K in size.
LONG ID	A node name greater than 7 characters to be applied to the previously read node. Maya node names do not have this restriction so the name is applied directly to the node.
REPLICATE	Multiple instances of the current transform node.
TRANSFORMATION MATRIX	Transform matrix to be applied to the current transform node.
Unsupported Ancillary Records
Bounding Volume
CAT Data Header
CAT Data Key
CAT Data Face
Extension Attribute	3rd party support.
Local Vertex Pool
MESH PRIMITIVE
MultiTexture	Allows support for up to 8 textures per vertex (May not be in first release).
Road Zone	(Pointer to a file that contains grid elevation data)
UV List	Follows Vertex List and contains texture layer information.
Vector	(Only used for light point faces).
Palette Records
Color Palette	A collection of color entries. Maya does not use a color palette. Each vertex holds the corresponding RGB color.
LIGHT PALETTE	Lights are DAG node entries in Maya.
MATERIAL PALETTE	Material become Shaders within Maya. See Texture Palette
TEXTURE PALETTE	Textures are applied to shaders within Maya. Shaders have an associated shading group that all nodes using this texture are connected to.
Eyepoint and Trackplane Palette	Implemented as Cameras in Maya. (See Known Issues.)
Light Source Palette
VERTEX PALETTE	Vertices are part of a polymesh in Maya.
VERTEX LIST	See Vertex Palette.
Vertex Palette Header	Followed by vertex data.
Vertex with Color	Polymesh vertex data.
Vertex with Color and Normal	Polymesh vertex data.
Vertex with Color, Normal and UV	Polymesh vertex data.
Vertex with Normal and UV	Polymesh vertex data.
Unsupported Palette Records
Key Table
Linkage Palette
Line Style Palette	Maya has only 1 line style.
Name Table
Sound Palette
Texture Mapping